Iq scores are normally distributed with a mean of 105 and a standard deviation of 18 assume that many samples of size n are taken from a large population of people and the mean iq score is computed for each sample a. if the sample size is n=64, find the mean and standard deviation of the distribution of sample means the mean of the distribution of sample mean

Step-by-step explanation:

Given that IQ scores are normally distributed with a mean of 105 and a std deviation of 18.  

By central limit theorem for large sample sizes randomly taken from a large population of people the sample mean x bar follows a normal distribution with mean = sample mean and std error = std dev/sqrt (n-1_

Using this we find mean of distribution of sample mean is 105 .

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

answer is because 4×10=40

and 98×4= is 392

40,392